You can also see some of its developing internal organs. This is the embryo of a veiled chameleon (Chamaeleo calyptratus) that’s been stained to visualize its developing skeleton. Its bones are red (1 ...

A calm chameleon, for example, may exhibit green, because the somewhat contracted yellow cells allow blue-reflected light to pass through. An angry chameleon may exhibit yellow, because the yellow ...

If a chameleon's naturally relaxed cells reflect blue, why do chilled-out chameleons typically have a green skin color like their surroundings? "Basically, when a chameleon is relaxed, they are ...